Joao Paulo Pimentao

Joao Paulo Pimentao
Universidade NOVA de Lisboa | NOVA · Faculty of Sciences and Technology

PhD

About

89
Publications
4,430
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
251
Citations
Additional affiliations
January 1990 - present
Universidade NOVA de Lisboa
Position
  • Professor (Assistant)
January 1990 - present
Universidade NOVA de Lisboa
Position
  • Professor (Assistant)
January 1985 - present
Institute for the Development of New Technologies
Position
  • Senior Researcher

Publications

Publications (89)
Article
When travelling in unfamiliar environments, a mobile service robot needs to acquire information about its surroundings in order to detect and avoid obstacles to arrive safely at its destination. This paper presents a map building solution to support mobile service robot's navigation, for service robots equipped with a LADAR (laser detection and ran...
Article
Modern control approaches are either designated as complex or tackle complex systems. The concept of Evolvable Production System (EPS) entails an iterative system design/control loop that supports system Adaptation and Evolution. Both concepts are borrowed from natural systems and, if properly instantiated and explored for the sake of production sy...
Conference Paper
This paper presents a Multi-Agent based web content categorization system. The system was prototyped using an Agents’ Framework for Internet data collection. The agents employ supervised learning techniques, specifically text learning to capture users preferences. The Framework and its application to E-commerce are described and the results achieve...
Conference Paper
This paper presents an application of agent technology to the field of communication security. The proposed method, Split and Merge, is presented. The generic approach is on the denying of access to the message, instead of ciphering the message at the source and then sending it over a communication channel. This is achieved by splitting the message...
Article
Full-text available
Operational Risk management, the least covered component of Enterprise Wide Risk Management, needs intelligent tools to implement Comprehensive Emergency Management Programs. In this paper we discuss how an Intelligent Decision Support System (I-DSS), based on Fuzzy Logic, can be used for supporting the management of complex and critical systems, e...
Article
Full-text available
Background: Artificial intelligence (AI) has contributed substantially in recent years to the resolution of different biomedical problems, including cancer. However, AI tools with significant and widespread impact in oncology remain scarce. The goal of this study is to present an AI-based solution tool for cancer patients data analysis that assist...
Article
Full-text available
Background: The survival of patients with lung cancer has substantially increased in the last decade by about 15%. This increase is, basically, due to targeted therapies available for advanced stages and the emergence of immunotherapy itself. This work aims to study the situation of biomarker testing in Spain. Patients and methods: The Thoracic...
Preprint
BACKGROUND The impact of prognostic stratification of early stage non-small-cell lung cancer (NSCLC) patients with poor prognosis after surgery is of considerable clinical relevance. The objective of this study was to identify clinical factors associated with long-term overall survival (OS) in early stage NSCLC patients and develop a prognostic mod...
Preprint
Full-text available
BACKGROUND Current prognosis in oncology is reduced to the tumour stage and performance status, leaving out many other factors that may impact the patient´s management. Prognostic stratification of early stage non-small-cell lung cancer (NSCLC) patients with poor prognosis after surgery is of considerable clinical relevance. The objective of this s...
Article
Full-text available
Purpose of Review Circadian rhythms impose daily rhythms a remarkable variety of metabolic and physiological functions, such as cell proliferation, inflammation, and DNA damage response. Accumulating epidemiological and genetic evidence indicates that circadian rhythms’ disruption may be linked to cancer. The integration of circadian biology into c...
Article
Full-text available
Objective To assess the prevalence of burn-out syndrome in healthcare workers working on the front line (FL) in Spain during COVID-19. Design Cross-sectional, online survey-based study. Settings Sampling was performed between 21st April and 3rd May 2020. The survey collected demographic data and questions regarding participants’ working position...
Article
Full-text available
One of the hottest topics being researched in the field of IoT relates to making connected devices smarter, by locally computing relevant information and integrating data coming from other sensors through a local network. Such works are still in their early stages either by lack of access to data or, on the other hand, by the lack of simple test ca...
Conference Paper
When dealing with events in moving vehicles, which can occur over widespread areas, it is difficult to identify sources that do not derive from material fatigue, but from situations that occur in specific spots. Considering a railway system, problems could occur in trains, not because of train’s equipment failure, but because the train is crossing...
Conference Paper
While Bluetooth Low Energy (BLE) is emerging in personal wireless network communication, aimed at applications such as healthcare, fitness and many others, there are still some pitfalls, namely concerning reliability and accuracy for its application in range sensing areas. BLE is designed for ultra low power consumption, ideal for applications requ...
Conference Paper
One of the hot topics of today's world is security. Not only companies spend more and more money in order to protect their valuable assets (physical and digital), regular people also need enhanced forms of security regarding personal sensitive information. Traditional password methods for protection of information are prone to brute force attacks,...
Conference Paper
Accuracy and precision are key parameters in the definition of indoor positioning systems. We want to provide a mobile robot with the capacity to autonomously determining its location inside buildings, to allow it to autonomously navigate. The solution developed is based on spreading emitter beacons of Bluetooth Low Energy in the building and use l...
Conference Paper
Reliability and Maintainability engineering is a well known field. Along the years several methods and techniques have been developed to deal with this type of problem. The great majority of the work developed hasn't been able to integrate context information correctly in their proposed solutions. Furthermore systems requiring reliability and maint...
Conference Paper
The miniaturization and cost reduction of sensors is encouraging its wide spreading and application in diverse usage areas. The use of multiple types of sensors can improve the current surveillance systems, by reducing false positives, extending the type of detected events and increasing system's redundancy. Also, geo-location is becoming more prec...
Conference Paper
A fast and efficient response to hazardous events can make the difference between life and death. Using this necessity as premise, surveillance systems are evolving, increasing the number of sensors used in event detection and developing new methods and algorithms for events handling. Nevertheless the timeliness and efficiency of response to events...
Conference Paper
In this paper a context classifier for service robots is presented. Independently of the application, service robots need to have the notion of their context in order to behave appropriately. A context classification architecture that can be integrated in service robots reliability calculation is proposed. Sensorial information is used as input. Th...
Conference Paper
Surveillance systems are in constant development and its dependence of humans although dwindling, it is still significant. On the other hand a constant evolution and adaptation of robots to perform tasks traditionally performed by humans it is also been witnessed. Using the advantage of these fields an architecture and a protocol to facilitate the...
Conference Paper
Surveillance systems are evolving and analog cameras give way to IP cameras, wireless sensors are used in home surveillance, remote mobile phones access to video surveillance is current practice, but the concept itself, of “surveillance systems”, has not evolved accordingly. Control rooms are still the heart of operations, where several security gu...
Conference Paper
Nowadays, surveillance systems are less dependent of humans’ interactions, mostly in event’s detection. However, there still are tasks to be performed by humans that could be delegated to autonomous robots. The integration of an autonomous service robot, as an agent, in a multi-agent surveillance system can reduce even more humans’ dependency. This...
Conference Paper
In this paper a review on context and environment classification is presented with focus on autonomous service robots. A comprehensive research was made in order to classify the most relevant techniques, models and frameworks in use today, as well as to present possible future applications for these previous works. Most of the work done in this are...
Article
Full-text available
DVA – Advanced Surveillance System based on Agents is a project developed by Holos, co-financed by QREN (NSRF - National Strategic Reference Financing) and inserted into System of Incentives for Research and Technological Development, which aims to create a system that supports a collaborative approach between humans and machines in the surveillanc...
Article
Full-text available
DVA is a system that supports a collaborative approach between humans and machines in the area of surveillance. The project aims to consolidate the activities of industrial research and experimental development carried out by the company in the areas of Intelligent Monitoring of Complex Systems, Self-organizing systems based on Agents and Telemonit...
Article
Full-text available
Detemination of reliability and Maintenability of Mobile Robots. Porcess and method for assessing type of terrain based on sensory information. Internal Report. Research Project Servrobot from HOLOS, Supported by QREN, Mais Centro and EU EFRD.
Article
Full-text available
Analysis of reconfigurability of Mobile Robots. Mechanical reconfigurability and Control Reconfigurability. Internal Report of the SERVROBOT project from HOLOS, supported by QREN, Mais Centro and EU EFRD.
Article
Operational Risk management, the least covered component of Enterprise Wide Risk Management, needs intelligent tools to implement Comprehensive Emergency Management Programs. In this paper we discuss how an Intelligent Decision Support System (I-DSS), based on Fuzzy Logic, can be used for supporting the management of complex and critical systems, e...
Chapter
Full-text available
This paper presents an intelligent decision support system for Incidents Contingency Management based on fuzzy logic. The main objective of the Contingency Management Tool (CMT) is to support the decision-making process when critical/disaster events occur. The CMT model uses a hybrid approach of operational conditions (top/down) and technological c...
Conference Paper
Full-text available
This paper discusses how to map between Semantic Resources (SRs) specifically created to represent knowledge in the Construction Sector and how to measure and assess the quality of such mappings. In particular results from the FUNSIEC project are presented, which investigated the feasibility of establishing semantic mappings among Construction-orie...
Conference Paper
Full-text available
This paper discusses the semantic interoperability in the Construction sector, from the view- point of the FUNSIEC project. Shortly, FUNSIEC project aimed to answer the following question: is it feasi- ble to establish semantic mappings amongst Semantic Resources (SRs) specifically created for the Construc- tion sector? This quest has been answered...
Conference Paper
This paper presents the Split and Merge method, an approach to provide secure communication over the Internet using software agents. Instead of relying exclusively on the traditional approaches of ciphering the message at the source and then sending it over a communication channel, the Split and Merge method focuses on denying access to the message...
Conference Paper
This paper presents a study where feature selection algorithms were evaluated in order to improve documents’ classification performance. The study was made during the project DEEPSIA, IST project Nr. 1999-20 283, funded by the European Union. The need to improve documents recognition was imposed by the need to increase the overall performance of th...
Article
DEEPSIA (Dynamic on-linE IntErnet Purchasing System based on Intelligent Agents) aims to develop a system to support companies as purchasers in electronic commerce e-procurement processes. To pursue this task, DEEPSIA is implemented using a Multi-Agent System, which components may, and effectively are, distributed in four countries (Brazil, Poland,...
Conference Paper
Full-text available
The integration of state-of-the-art Information Technology (IT) into the rapid prototyping (RPi) industry has not yet achieved a satisfactory degree of implementation. Most established developments are focused on the Computer-Aided Design (CAD), drafting, and automation of certain pre and post fabrication processes. This paper outlines the architec...
Book
Full-text available
The effective exchange of information regarding the planning and control activities (schedules, resources, materials, cost, cash flow) between the different parties involved in building and construction projects is a critical success factor to avoid projects' time and costs overrun and to insure better quality. However, current applications and res...
Article
This paper presents an historical review of the tools developed and the experience acquired by UNINOVA, the Institute for the Development of New Technologies, during the last eight years, integrating manufacturing systems using ISO 10303-STEP, in the scope of international industrial projects. The integration of commercial applications and standard...
Article
Full-text available
Considering the architecture designed for the overall incorporation of information technologies (IT) on road construction environments, this paper focuses on the development of automated machine controllers, and on the underlying requisites of machines to use these controllers. Special attention is paid to the modules that compose the machine contr...
Article
Full-text available
Typically, software tools from different software houses are modeled in distinct ways, and offering different Import/Export data formats, therefore enabling data communication among them is an arduous task. One possible approach, to eliminate this problem is the development of dedicated interfaces in order to translate the heterogeneous data format...
Article
Typically company's software tools are modeled in different ways, and have different Import/Export data formats, becoming data communication among them an arduous task (Boissier R., 1995), Provide a set of mechanisms that speed up the integrator's tasks, facilitating the generation of interfaces and avoiding development errors, is important in orde...
Conference Paper
Full-text available
This paper focuses on the problems underlying the integration (information wise) of manufacturers, retailers, interior decorators, and customers in the market of furniture and interior design. The problems and solutions presented account for the work being undertaken by UNINOVA under the scope of the European Commission’s (EC) ESPRIT IV project 220...